Improvement in machines for rolling hoe-blanks



H. WATERS.

Improvement in Machines for Rolling. Hoe-Blanks. N0.'H4,498.

.Pater lted May 2, 187i.

155mm (tffim HERVEY WATERS. OF BUSTON, MASSACHUSETTS.

Letters Patent No. 114,498, dated May 2,1871.

IMPROVEMENT IN MACHINES FOR ROLLING HOE-BLANKS.

The Schedule referred to in these Letters Patent and making part of thesame.

accompany and form part of this specification, is a description of myinvention sufficient to enable those skilled in the art to practice it.

The invention relates to the construction and arrangement of mechanismfor rolling and shaping metal by means of dies formed upon or in thesurfaces of two rolls.

The invention consists in the employment of a mechanism by which, at thewill of the operator, the work is automatically introduced into thedies, in conneetion with a mechanism by which the blank, after beingreturned from the action of therolls, is automatically turned for itsnext presentation to the dies, the roll" being constructed with sets ofconverselyworking dies upon the respective opposite faces thereof, sothat the blank may be twice rolled at each rotation of the dies. 7

The drawings represent a rolling-mill embodying the invention, andadapted to rolling hoe-blanks- Figure 1 showing a front, and

Figure 2 a rear perspective view of the machine.

a a denote the stands or housings, in which are journaled two rolls, 1)b, geared, together, and having formed on opposite portions of theirsurfaces two sets of dies, 0 f e f, the die 6 of the upper roll workingin conjunction with the die a of the lower one, and the die f of theupper roll in conjunction with the die f of the lower one, the surfaceson each roll between the dies being lower than the working surfaces ofthe dies in order that the blank may be introduced between the oppositerolls when open, andheld in position for the dies to bite upon it intheir rotation, and roll and return it to or toward the side-from whichit was entered.

In front of the machine and between the housings is a table or stand, g,having ways in which a carriage, h, slides; this carriage carries theblank 4'. to be rolled. The blank, which in this case is a hoe-blank, issupported upon the carriage in such manner that it may be turned atproper times to present the opposite ends thereof to the action of thedies, the bearings in which it turns being covered by a slide, 3', bywithdrawal of which the blank may be introduced into or removed from themachine.

In rear of the machine is a rocker-shaft, is, turning in bearings madein the housings a. I

This shaft has an arm, I, fixed to and extending up from it,- to theupper end of which the carriage his connected by a link, on.

Another arm,n, extending outward from this rocker-shaft, carries aweight, the tendency of the weighted arm being to draw the carriage itbetween the rolls, as will readily be understood.

The opposite end of the rocker-shaft carries another arm, 0, the upperend of which is bent outward into the path of two cams, p 11', upon agear, g, on the lower roll.

The carriage h is held stationary, when the blank is not being rolled,by a hook or latch, 'r, hooking into a stop, s, on the carriage, thebook being kept normally in position by a spring, and having a handle,by the depression of which the operator can release the carriage fromthe hook. The carriage being so fastened in position, the arm 0 is heldout of the path of the cams p 12'.

When the operator, by depression of the handle, releases the carriage(the dies being in proper position) the weight on the arm n draws thecarriage with its blank toward the rolls, the arm 0 strikes the cam 11,and the weight draws the blank between the open rolls as fast as the campermits it to enter, this being done to effect the gradual introductionof the blank, instead of allowing it to-be violently pulled between therolls by the action of the weight alone. A stop upon the table 9determines the'extent of this movement of the carriage, which is such asto bring the blank into position for the dies to strike upon it. As therolls rotate the dies bite upon the blank, and having passed theirlength upon it, carrying it toward the side from which itwas entered,the next cam 11' strikes upon the arm 0 and carries it inward, movingthe carriage back until it is locked in position by the springlatch r.

Thus it will be seen that the work is automatically introduced betweenthe rolls and automatically returned from them, the cam actingnegatively in such introduction and positively in the returnof theblank.

By keeping the latch 7' up the blank will be continuously introduced tothe action of the dies, first one end and then the other alternately,the rolls beingv screwed together to roll down the blank after eachoperation of the two sets of dies.

Blanks like that shown in figs. l and 3 (the latter figure showing theopposite surface of the blank) are forthe manufacture of that class ofhoes in which the shanks are solid with the blades, that shown havingthe shanks for two blades drawn upon it, one at each end thereof, withthe material for two blades (in connection) between the shanks, onesurface of the blank being flat, while the other surface has aprojection upon it where the shanks join the blades.

The mechanism by which the blank is turned after the first set of dieshas acted upon it, and before its presentation to the next set, is asfollows;

projections to are inline therewith.

blank. into'a horizontal position, in which position it is carriedthrough and returned from the rolls.

7 As it recedes from the rolls the projection u, lastacted upon by thehook, st'rikes in a fork, 'v, and is turned up by the movement of theprojection to against the same, thus bringing the blank again intovertical position, but withits opposite end'up. When the blank nextadvances toward the rolls the lower book a is again acted upon asbefore, carrying the blank again into horizontal position, but with theopposite end presented for the action of the rolls.

The automatic arrangement herein shown, and which is suitable forturning this blank as described, may be changed in rolling other formsor kinds of work, theinvention not being merely in the mechanism hereshown for the purpose, but in an organization by which the blank isautomatically turned after one operation of the dies upon it, and so asto bring it into position for the-action of another set of dies.

Two sets of dies are shown upon the surfaces of the rolls, as abovealluded to, one set, ff, rolling one end of the blank from the line ofthe shanks to the, edge of the blanks, (the upper die being formed toroll the flat side of the blanks, and the lower die being formed to rollthe side upon which the shanks project beyond the surface of the blank,)and the blankbeing then turned, the other set, as being formedconversely to roll the opposite 'end from the shanks to the edgethereof, the lower die rolling the flat sideq and the upper die the sideupon which the shanks:

project beyond the surface of the blank.

I claim- 1n combination with the alternating roller-dies, the mechanismfor both automatically introducing the blank between the dies andturning the same sothat: the dies may act conversely upon itsubstantially as described.

In witness whereof have hereunto set my hand this 14th day of November,A. D. 1865.

- HERVEY WATERS;

Witnesses:

S. B. KIDDER, FRANCIS GOULD.

